{
  "schema_version": "managed_receipt_signing.v1",
  "mode": "sign_receipt",
  "receipt_id": "receipt_001",
  "production_run_id": "run_001",
  "return_package_id": "return_package_001",
  "payment_reference": "agent_payment_ref_001",
  "amount_units": 107,
  "currency": "usd"
}